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annotate urogue/armor.c @ 298:5a94c9b3181e

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UltraRogue: clear the next_obj field when removing items from the floor. The next_obj field is a pointer which the top item in a stack uses to keep a list of the other items. When removing an item from the stack, rem_obj() failed to set next_obj to NULL, which can cause items in monster inventory to point to items earlier in the inventory list. That causes infinite co-recursion when saving or restoring.
author John "Elwin" Edwards
date Thu, 08 Feb 2018 20:54:34 -0500
parents c495a4f288c6
children
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1 /*
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2 armor.c - functions for dealing with armor
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3
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4 UltraRogue: The Ultimate Adventure in the Dungeons of Doom
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5 Copyright (C) 1985, 1986, 1992, 1993, 1995 Herb Chong
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6 All rights reserved.
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7
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8 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka
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10 All rights reserved.
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11
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12 Based on "Rogue: Exploring the Dungeons of Doom"
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13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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14 All rights reserved.
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15
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16 See the file LICENSE.TXT for full copyright and licensing information.
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17 */
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18
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19 #include "rogue.h"
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20
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21 /*
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22 wear()
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23 The player wants to wear something, so let him/her put it on.
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24 */
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25
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26 void
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27 wear(void)
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28 {
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29 struct object *obj;
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30
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31 if (cur_armor != NULL)
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32 {
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33 msg("You are already wearing some.");
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34
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35 after = FALSE;
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36
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37 return;
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38 }
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39
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40 /* What does player want to wear? */
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41
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42 if ((obj = get_object(pack, "wear", ARMOR, NULL)) == NULL)
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43 return;
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44
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45 wear_ok(&player, obj, MESSAGE);
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46 waste_time();
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47
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48 cur_armor = obj;
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49 obj->o_flags |= ISKNOW;
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50
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51 msg("You are now wearing %s.", inv_name(obj, TRUE));
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52
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53 return;
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54 }
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55
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56 /*
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57 take_off()
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58 Get the armor off of the players back
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59 */
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60
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61 void
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62 take_off(void)
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63 {
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64 struct object *obj;
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65
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66 if ((obj = cur_armor) == NULL)
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67 {
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68 msg("You aren't wearing armor!");
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69 return;
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70 }
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71
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72 if (!dropcheck(cur_armor))
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73 return;
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74
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75 msg("You were wearing %c%c) %s.", ARMOR, print_letters[get_ident(obj)],
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76 inv_name(obj, LOWERCASE));
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77
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78 cur_armor = NULL;
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79
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80 if (on(player, STUMBLER))
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81 {
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82 msg("Your foot feels a lot better now.");
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83 turn_off(player, STUMBLER);
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84 }
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85 }
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86
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87 /*
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88 wear_ok()
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89 enforce player class armor restrictions
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90 */
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91
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92 int
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93 wear_ok(struct thing *wearee, struct object *obj, int print_message)
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94 {
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